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Industry 4.0 proposed by Germany has three major themes: first, intelligent factories, focusing on intelligent production systems and processes, and the realization of networked distributed production facilities; The second is intelligent production, which mainly involves the production logistics management of the whole enterprise, human-computer interaction and the application of 3D technology in the industrial production process. The third is intelligent logistics, which integrates logistics resources mainly through the Internet, the Internet of Things and the Internet of Services to give full play to the efficiency of existing logistics resources.4. Talk to HR about the expected salary and treatment and HR will tell you when there will be notice, so we can call this method whether to get the offer (of course, there will definitely be no notice if it does not meet the requirements);不必怕，生死自有天命，我死了还有必归。随后，两人立即赶往嵩山。On the one hand, the core components of the network infrastructure have never changed in the past ten years, which makes some discovered and exploited vulnerabilities and some mature attack tools have a long life cycle and are still valid even today. On the other hand, the rapid development of the application of the Internet seven-layer model has diversified the attack targets of DDoS. From the web to DNS, from the three-layer network to the seven-layer application, from the protocol stack to the application App, the endless new products have also given hackers more opportunities and breakthrough points. Moreover, DDoS protection is a project with unequal technology and cost. Often, the construction cost of a business's DDoS defense system is larger than the cost or benefit of the business itself, which makes many start-up companies or small Internet companies unwilling to make more investment.Founder of Touching SocksPublic class Plus implementations Expression {